From: Lijo Lazar <[email protected]> Add functions required to suspend/resume instances of SDMA which are part of an XCP.
Signed-off-by: Lijo Lazar <[email protected]> Reviewed-by: Hawking Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 36 ++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c index 6a971e15b4b0..184eb7902722 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c @@ -27,6 +27,7 @@ #include <linux/pci.h> #include "amdgpu.h" +#include "amdgpu_xcp.h" #include "amdgpu_ucode.h" #include "amdgpu_trace.h" @@ -2025,3 +2026,38 @@ const struct amdgpu_ip_block_version sdma_v4_4_2_ip_block = { .rev = 0, .funcs = &sdma_v4_4_2_ip_funcs, }; + +static int sdma_v4_4_2_xcp_resume(void *handle, uint32_t inst_mask) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int r; + + if (!amdgpu_sriov_vf(adev)) + sdma_v4_4_2_inst_init_golden_registers(adev, inst_mask); + + r = sdma_v4_4_2_inst_start(adev, inst_mask); + + return r; +} + +static int sdma_v4_4_2_xcp_suspend(void *handle, uint32_t inst_mask) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + uint32_t tmp_mask = inst_mask; + int i; + + for_each_inst(i, tmp_mask) { + amdgpu_irq_put(adev, &adev->sdma.ecc_irq, + AMDGPU_SDMA_IRQ_INSTANCE0 + i); + } + + sdma_v4_4_2_inst_ctx_switch_enable(adev, false, inst_mask); + sdma_v4_4_2_inst_enable(adev, false, inst_mask); + + return 0; +} + +struct amdgpu_xcp_ip_funcs sdma_v4_4_2_xcp_funcs = { + .suspend = &sdma_v4_4_2_xcp_suspend, + .resume = &sdma_v4_4_2_xcp_resume +}; -- 2.39.2
